Preparation for bleaching keratin fibers, containing at least one aminosilicone and a white pigment

Abstract

The invention relates to a preparation for dyeing keratin fibers, in particular human hair, containing (a1) at least one amino-functionalized silicone polymer, and (a2) at least one white pigment. The invention also relates to a process for bleaching keratin fibers, wherein the aforementioned preparation is used on the keratin fibers.

Description

[0001] Henkel AG & Co. KGaA

[0002] 2022P00052WO

[0003] Agent for lightening keratin fibers containing at least one aminosilicone and a white pigment

[0004] The present application relates to an agent for lightening keratin fibers, in particular human hair, which contains at least one amino-functionalized silicone polymer (a1) and at least one white pigment (a2).

[0005] A second subject matter of this application is a method for lightening keratin fibers, in particular human hair, wherein an agent of the first subject matter of the invention is applied to the keratin fibers, allowed to act and then optionally washed out again with water.

[0006] Altering the shape and color of keratin fibers, especially human hair, represents an important area of ​​modern cosmetics. Depending on the coloring requirements, hair coloring specialists are familiar with various coloring systems. For permanent, intense colorings with good fastness properties and good gray coverage, oxidation lightening agents are typically used. Such lightening agents contain oxidation dye precursors, so-called developer components, and coupler components, which, under the influence of oxidizing agents such as hydrogen peroxide, form the actual dyes. Oxidation lightening agents are characterized by very long-lasting coloring results.

[0007] When using direct dyes, the fully formed dyes from the lightening agent diffuse into the hair fiber. Compared to oxidative hair coloring, the colors obtained with direct dyes are less durable and wash out more quickly. Colorations with direct dyes typically remain on the hair for between 5 and 20 washes.

[0008] The use of color pigments is known for temporary color changes on hair and / or skin. Color pigments are generally understood to be insoluble, color-imparting substances. These are present undissolved in the form of small particles in the coloring formulation and are deposited only externally on the hair fibers and / or the skin surface. Therefore, they can usually be removed completely after several washes with surfactant-containing cleansers. Various products of this type are available on the market under the name hair mascara. If the user desires particularly long-lasting color, the use of oxidative lightening agents has so far been the only option. However, despite numerous optimization attempts, an unpleasant ammonia or amine odor cannot be completely avoided with oxidative hair coloring.The hair damage still associated with the use of oxidative bleaching agents also has a detrimental effect on the user's hair. Therefore, the search for alternative, high-performance coloring methods remains a challenge. One possible alternative coloring system that has recently gained increasing attention is based on the use of colored pigments.

[0009] Coloring with pigments offers several significant advantages. Because the pigments only attach to the keratin fibers, especially the hair fibers, from the outside, the damage associated with the coloring process is extremely minimal. Furthermore, unwanted coloring can be removed quickly and easily without leaving any residue, thus offering the user the opportunity to return to their original hair color immediately and without great effort. This coloring process is therefore particularly attractive for consumers who do not want to regularly lighten their hair.

[0010] Recent work has addressed the problem of the short durability of this coloring system. In this context, it was found that the washfastness of the color results obtained with pigments could be significantly improved by combining the pigments with certain amino-functionalized silicone polymers. Furthermore, by selecting particularly suitable pigments and pigment concentrations, a lighter color result could be achieved on dark hair, so that this coloring system even made it possible to lighten hair, which was previously only possible with oxidative hair treatments (bleaches or bleaching agents).

[0011] Until now, the intensity of this lightening has always been limited. While the use of light pigments in particularly high concentrations could achieve a lightening of one or two shades, it was impossible to create truly pure blonde tones, especially on very dark hair bases such as dark brown or even almost black hair. However, the low-damage lightening of very dark hair is a strong desire of many users. However, this wish has not been fulfilled with conventional, state-of-the-art pigment lightening agents.

[0012] The object of the present invention was to provide a pigment-based agent with particularly strong lightening power. The use of the lightening agent should make it possible to create a true and light blonde shade even on very dark hair bases, so that users can, for example, lighten their hair blonde for one day, but can also remove this coloration without residue after the desired period. Surprisingly, it has now been found that the aforementioned object can be excellently achieved if keratin fibers, in particular human hair, are treated with an agent containing at least one amino-functionalized silicone polymer (a1) and at least one white pigment (a2).

[0013] A first object of the present invention is an agent for lightening keratin fibers, in particular human hair, containing

[0014] (a1) at least one amino-functionalized silicone polymer, and

[0015] (a2) at least one white pigment.

[0016] In the course of the work carried out on this invention, it was surprisingly found that particularly light and natural blonde tones could be achieved when coloring keratin fibers if a lightening agent was applied which contained a combination of at least one amino-functionalized silicone polymer (a1) and at least one white pigment (a2).

[0017] Keratin fibers

[0018] Keratin fibers include wool, fur, and feathers, and especially human hair. Human hair is particularly preferred as a keratin fiber.

[0019] Lightening agents

[0020] The term "lightening agent" is used in the context of this invention for a coloring of the keratin material, in particular of the hair, caused by the use of pigments. During this coloring, the pigments, as color-imparting compounds, are deposited together with the amino-functionalized silicone polymer(s) in a particularly homogeneous, uniform, and smooth film on the surface of the keratin material. The lightening agent can be used in particular on keratin fibers with a dark initial color. Due to the use of the white pigment(s), the color of the colored keratin fibers is lighter than the initial color, so that a lightening or bleaching effect is visually perceived. This lightening effect can be achieved without the otherwise conventional oxidizing agents such as hydrogen peroxide and / or persulfate compounds, etc.The brightening agent according to the invention is a ready-to-use brightening agent containing amino-functionalized silicone polymers (a1).

[0021] As the first ingredient (a1) essential to the invention, the product contains at least one amino-functionalized silicone polymer. The amino-functionalized silicone polymer can alternatively be referred to as aminosilicone or amodimethicone. Silicone polymers are generally macromolecules with a molecular weight of at least 500 g / mol, preferably at least 1000 g / mol, more preferably at least 2500 g / mol, and particularly preferably at least 5000 g / mol, which comprise repeating organic units.

[0022] The maximum molecular weight of the silicone polymer depends on the degree of polymerization (number of polymerized monomers) and the batch size, and is also determined by the polymerization method. For the purposes of the present invention, it is preferred if the maximum molecular weight of the silicone polymer is not more than 10 7 g / mol, preferably not more than 10 6 g / mol and particularly preferably not more than 10 5 g / mol.

[0023] Silicone polymers comprise numerous Si-O repeating units, where the Si atoms may carry organic residues such as alkyl or substituted alkyl groups. A silicone polymer is therefore also referred to as polydimethylsiloxane.

[0024] In accordance with the high molecular weight of the silicone polymers, these are based on more than 10 Si-O repeating units, preferably more than 50 Si-O repeating units and particularly preferably more than 100 Si-O repeating units, most preferably more than 500 Si-O repeating units.

[0025] An amino-functionalized silicone polymer is a functionalized silicone that carries at least one structural unit with an amino group. The amino-functionalized silicone polymer preferably carries multiple structural units, each with at least one amino group. An amino group is defined as a primary amino group, a secondary amino group, and a tertiary amino group. All of these amino groups can be protonated in an acidic environment and are then present in their cationic form.

[0026] In principle, good results could be achieved with amino-functionalized silicone polymers (a1) if they contain at least one primary, at least one secondary, and / or at least one tertiary amino group. However, colorations with the highest color intensity were observed when an amino-functionalized silicone polymer (a1) containing at least one secondary amino group was used in the product.

[0027] In a particularly preferred embodiment, an agent according to the invention is characterized in that the agent contains at least one amino-functionalized silicone polymer (a1) having at least one secondary amino group.

[0028] The secondary amino group(s) can be located at various positions on the amino-functionalized silicone polymer. Particularly good results were found when using an amino-functionalized silicone polymer (a1) that has at least one, preferably several, structural units of the formula (Si-amino). -Amino)

[0029] In the structural units of the formula (Si-amino), the abbreviations ALK1 and ALK2 independently represent a linear or branched, divalent Ci-C2o-alkylene group.

[0030] In a further particularly preferred embodiment, an agent according to the invention is characterized in that the agent contains at least one amino-functionalized silicone polymer (a1) which comprises at least one structural unit of the formula (Si-Amino), -Amino) where

[0031] ALK1 and ALK2 independently represent a linear or branched, divalent C1-C20 alkylene group. The positions marked with an asterisk (*) indicate the bond to other structural units of the silicone polymer. For example, the silicon atom adjacent to the star can be bonded to another oxygen atom, and the oxygen atom adjacent to the star can be bonded to another silicon atom or to a C1-C20 alkyl group.

[0032] A divalent Ci-C2o-alkylene group can alternatively be referred to as a divalent or divalent Ci-C2o-alkylene group, which means that each group ALK1 or AK2 can form two bonds.

[0033] In the case of ALK1, one bond is from the silicon atom to the ALK1 group, and the second bond is between ALK1 and the secondary amino group.

[0034] In the case of ALK2, one bond is formed from the secondary amino group to the ALK2 moiety, and the second bond is formed between ALK2 and the primary amino group.

[0035] Examples of linear divalent C1-C2o alkylene groups include the methylene group (-CH2-), the ethylene group (-CH2-CH2-), the propylene group (-CH2-CH2-CH2-), and the butylene group (-CH2-CH2-CH2-CH2-). The propylene group (-CH2-CH2-CH2-) is particularly preferred. From a chain length of 3 carbon atoms, divalent alkylene groups can also be branched. Examples of branched, divalent C3-C2o alkylene groups are (-CH2-CH(CH3)-) and (-CH2-CH(CH3)-CH2-).

[0036] In a further particularly preferred embodiment, the structural units of the formula (Si-amino) represent repeating units in the amino-functionalized silicone polymer (a1), so that the silicone polymer comprises several structural units of the formula (Si-amino).

[0037] Particularly suitable amino-functionalized silicone polymers (a1) with at least one secondary amino group are listed below.

[0038] Color changes with particularly large differences in brightness could be obtained when an agent was applied to the keratinic material containing at least one amino-functionalized silicone polymer (a1) comprising structural units of the formula (Si-I) and the formula (Si-II)

[0039]

[0040] In a further explicitly particularly preferred embodiment, an inventive

[0041] Agent characterized in that it contains at least one amino-functionalized silicone polymer (a1) which comprises structural units of the formula (Si-I) and the formula (Si-II)

[0042] A corresponding amino-functionalized silicone polymer with the structural units (Si-I) and (Si-III) is, for example, the commercial product DC 2-8566 or Dowsil 2-8566 Amino Fluid, which is marketed by the Dow Chemical Company and which bears the name "Siloxanes and Silicones, 3-[(2-Aminoethyl)amino]-2-methylpropyl Me, Di-Me-Siloxane" and the CAS number 106842-44-8. Another particularly preferred commercial product is Dowsil AP-8568 Amino Fluid, which is also marketed by the Dow Chemical Company. In a further preferred embodiment, an agent according to the invention is characterized in that it contains at least one amino-functional silicone polymer (a1) of the formula (Si-III), where m and n are numbers chosen so that the sum (n + m) is in the range from 1 to 1000, n is a number in the range from 0 to 999 and m is a number in the range from 1 to 1000,

[0043] R1, R2 and R3, which are the same or different, represent a hydroxy group or a C1-4 alkoxy group, wherein at least one of the groups R1 to R3 represents a hydroxy group;

[0044] Further preferred agents according to the invention are characterized by their content of at least one amino-functional silicone polymer (a1) of the formula (Si-IV), in which p and q are numbers chosen so that the sum (p + q) is in the range from 1 to 1000, p is a number in the range from 0 to 999 and q is a number in the range from 1 to

[0045] 1000, R1 and R2, which are different, represent a hydroxy group or a C1-4 alkoxy group, wherein at least one of the groups R1 to R2 represents a hydroxy group.

[0046] The silicones of formulas (Si-III) and (Si-IV) differ in the grouping at the Si atom that carries the nitrogen-containing group: In formula (Si-III), R2 represents a hydroxyl group or a C1-4 alkoxy group, while the residue in formula (Si-IV) is a methyl group. The individual Si groups, which are designated by the indices m and n or p and q, do not necessarily have to be present as blocks; rather, the individual units can also be randomly distributed, i.e., in formulas (Si-III) and (Si-IV), not every R1-Si(CH3)2 group is necessarily bonded to a -[O-Si(CH3)2]- group.

[0047] Agents according to the invention which contain at least one amino-functional silicone polymer (a1) of the formula (Si-V) have also proven particularly effective with regard to the desired effects in the

[0048] A represents a group -OH, -O-Si(CH3)3,-O-Si(CH3)2OH,-O-Si(CH3)2OCH3,

[0049] D represents a group -H, -Si(CH3)3, -Si(CH3)2OH, -Si(CH3)2OCH3, b, n and c represent integers between 0 and 1000, with the provisos

[0050] - n > 0 and b + c > 0

[0051] - at least one of the conditions A = -OH or D = -H is fulfilled.

[0052] In the above-mentioned formula (Si-V), the individual siloxane units with the indices b, c and n are statistically distributed, ie they do not necessarily have to be block copolymers.

[0053] The agent (a) may further contain one or more different amino-functionalized silicone polymers represented by the formula (Si-VI)

[0054] M (Ra Q bS i 0 (4-ab) / 2)x (RcS i 0 (4-c) / 2)y M (Si-VI), where in the above formula R is a hydrocarbon or a hydrocarbon radical having 1 to about 6 carbon atoms, Q is a polar radical of the general formula -R 1 HZ is, where R 1is a divalent linking group bonded to hydrogen and the radical Z, composed of carbon and hydrogen atoms, carbon, hydrogen and oxygen atoms, or carbon, hydrogen and nitrogen atoms, and Z is an organic amino-functional radical containing at least one amino-functional group; "a" takes on values ​​in the range of about 0 to about 2, "b" takes on values ​​in the range of about 1 to about 3, "a" + "b" is less than or equal to 3, and "c" is a number in the range of about 1 to about 3, and x is a number in the range of 1 to about 2,000, preferably from about 3 to about 50, and most preferably from about 3 to about 25, and y is a number in the range of about 20 to about 10,000, preferably from about 125 to about 10,000, and most preferably from about 150 to about 1,000, and M is a suitable silicone end group as known in the art, preferably trimethylsiloxy.Non-limiting examples of the radicals represented by R include alkyl radicals such as methyl, ethyl, propyl, isopropyl, isopropyl, butyl, isobutyl, amyl, isoamyl, hexyl, isohexyl, and the like; alkenyl radicals such as vinyl, halovinyl, alkylvinyl, allyl, haloallyl, alkylallyl; cycloalkyl radicals such as cyclobutyl, cyclopentyl, cyclohexyl, and the like; phenyl radicals, benzyl radicals, halohydrocarbon radicals such as 3-chloropropyl, 4-bromobutyl, 3,3,3-trifluoropropyl, chlorocyclohexyl, bromophenyl, chlorophenyl, and the like; and sulfur-containing radicals such as mercaptoethyl, mercaptopropyl, mercaptohexyl, mercaptophenyl, and the like; preferably, R is an alkyl radical containing 1 to about 6 carbon atoms, and most preferably, R is methyl. Examples of R 1include methylene, ethylene, propylene, hexamethylene, decamethylene, -CH2CH(CH3)CH2-, phenylene, naphthylene, -CH2CH2SCH2CH2-, -CH2CH2OCH2-, -OCH2CH2-, -OCH2CH2CH2-, -CH2CH(CH3)C(O)OCH2-, -(CH2)3CC(O)OCH2CH2-, -C6H4C6H4-, -C6H4CH2C6H4-; and -(CH2)3C(O)SCH2CH2-.

[0055] Z is an organic, amino-functional residue containing at least one functional amino group. A possible formula for Z is NH(CH2) Z NH2, where z is 1 or more. Another possible formula for Z is -NH(CH2) Z (CH2) ZZ NH, where both z and zz are independently 1 or more, this structure including diamino ring structures such as piperazinyl. Z is most preferably a -NHCH2CH2NH2- radical. Another possible formula for Z is -N(CH2) Z (CH2) ZZ NX2 or -NX2, wherein each X of X2 is independently selected from the group consisting of hydrogen and alkyl groups having 1 to 12 carbon atoms, and zz is 0.

[0056] Q is most preferably a polar, amine-functional radical of the formula -CH2CH2CH2NHCH2CH2NH2. In the formulas, "a" takes on values ​​in the range of about 0 to about 2, "b" takes on values ​​in the range of about 2 to about 3, "a" + "b" is less than or equal to 3, and "c" is a number in the range of about 1 to about 3. The molar ratio of the R a QbSiO( 4-a -b) / 2 units to the R c SiO (4-c) / 2 units is in the range of about 1:2 to 1:65, preferably from about 1:5 to about 1:65, and most preferably from about 1:15 to about 1:20. If one or more silicones of the above formula are used, then the various variable substituents in the above formula can be different for the various silicone components present in the silicone mixture.

[0057] In a further preferred embodiment, an agent according to the invention is characterized in that it contains at least one amino-functional silicone polymer of the formula (Si-VII),

[0058] R'aG3-a-Si(OSiG2)n-(OSiG bR'2- b)mO-SiG3-a-R'a (Si-VII), where:

[0059] - G is -H, a phenyl group, -OH, -O-CH3, -CH3, -O-CH2CH3, -CH2CH3, -O-

[0060] CH2CH2CH3,-CH2CH2CH3, -O-CH(CH3)2, -CH(CH3)2, -O-CH2CH2CH2CH3, - CH2CH2CH2CH3, -O-CH2CH(CH3)2, -CH2CH(CH3)2, -O-CH(CH3)CH2CH3, - CH(CH3)CH2CH3, -OC(CH3)3, -C(CH3)3 ;

[0061] - a stands for a number between 0 and 3, especially 0;

[0062] - b stands for a number between 0 and 1 , in particular 1 ,

[0063] - m and n are numbers whose sum (m + n) is between 1 and 2000, preferably between 50 and 150, where n preferably assumes values ​​from 0 to 1999 and in particular from 49 to 149 and m preferably assumes values ​​from 1 to 2000, in particular from 1 to 10,

[0064] - R' is a monovalent radical selected from o -QN(R")-CH2-CH2-N(R")2 o -QN(R")2o -QN + (R")3A- o -QN + H(R")2A- o -QN + H2(R")A- o -QN(R")-CH2-CH2-N + R"H2A- , where each Q represents a chemical bond, -CH2-, -CH2-CH2-, -CH2CH2CH2-, -C(CH3)2- , -CH2CH2CH2CH2-, -CH2C(CH3)2-, -CH(CH3)CH2CH2-,

[0065] R" represents identical or different radicals from the group -H, -phenyl, -benzyl, -CH2-CH(CH3)Ph, the Ci-20-alkyl radicals, preferably -CH3, -CH2CH3, -CH2CH2CH3, - CH(CH3)2, -CH2CH2CH2H3, -CH2CH(CH3)2, -CH(CH3)CH2CH3, -C(CH3)3, and A represents an anion which is preferably selected from chloride, bromide, iodide or methosulfate.

[0066] In a further preferred embodiment, an agent according to the invention is characterized in that it contains at least one amino-functional silicone polymer (a1) of the formula (Si-VIIa), (CH3)3Si-[O-Si(CH3)2]n[OSi(CH3)]m-OSi(CH3)3 (Si-VIIa),

[0067] CH2CH(CH3)CH2NH(CH2)2NH2 wherein m and n are numbers whose sum (m + n) is between 1 and 2000, preferably between 50 and 150, where n preferably assumes values ​​from 0 to 1999 and in particular from 49 to 149 and m preferably assumes values ​​from 1 to 2000, in particular from 1 to 10.

[0068] According to the INCI declaration, these silicones are called trimethylsilylamodimethicones.

[0069] In a further preferred embodiment, an agent according to the invention is characterized in that it contains at least one amino-functional silicone polymer of the formula (Si-VIIb)

[0070] R-[Si(CH3)2-O]ni[Si(R)-O]m-[Si(CH3)2]n2-R (Si-Vllb),

[0071] (CH2)3NH(CH2)2NH2, wherein R is -OH, -O-CHs or a -CHs group and m, n1 and n2 are numbers whose sum (m + n1 + n2) is between 1 and 2000, preferably between 50 and 150, the sum (n1 + n2) preferably assuming values ​​from 0 to 1999 and in particular from 49 to 149 and m preferably assuming values ​​from 1 to 2000, in particular from 1 to 10.

[0072] These amino-functionalized silicone polymers are referred to as amodimethicones according to the INCI declaration.

[0073] Regardless of which amino-functional silicones are used, agents according to the invention are preferred that contain an amino-functional silicone polymer (a1) whose amine number is above 0.25 meq / g, preferably above 0.3 meq / g, and in particular above 0.4 meq / g. The amine number represents the milliequivalents of amine per gram of the amino-functional silicone. It can be determined by titration and can also be expressed in mg KOH / g.

[0074] Furthermore, agents containing a special 4-morpholinomethyl-substituted silicone polymer (a1) are also suitable. This amino-functionalized silicone polymer comprises structural units of the formulas (Si-VIII) and (Si-IX).

[0075]

[0076] Corresponding 4-morpholinomethyl-substituted silicone polymers are described below.

[0077] A preferred amino-functionalized silicone polymer is known as amodimethicone / morpholinomethyl silsesquioxane copolymer and is commercially available in the form of the raw material Belsil ADM 8301 E from Wacker.

[0078] For example, a silicone containing structural units of the formulas (Si-VIII), (Si-IX) and (Si-X) can be used as a 4-morpholinomethyl-substituted silicone. in which

[0079] R1 represents -CH3, -OH, -OCH3, -O-CH2CH3, -O-CH2CH2CH3, or -O-CH(CH3)2;

[0080] R2 stands for -CH3, -OH, or -OCH3.

[0081] Particularly preferred agents according to the invention contain at least one 4-morpholinomethyl-substituted silicone of the formula (Si-Xl)

[0082]

[0083] (Si-Xl) in the

[0084] R1 represents -CH3, -OH, -OCH3, -O-CH2CH3, -O-CH2CH2CH3, or -O-CH(CH3)2;

[0085] R2 stands for -CH3, -OH, or -OCH3.

[0086] B represents a group -OH, -O-Si(CH3)3,-O-Si(CH3)2OH,-O-Si(CH3)2OCH3,

[0087] D stands for a group -H, -Si(CH3)3, -Si(CH3)2OH, -Si(CH3)2OCH3, a, b and c independently of one another stand for integers between 0 and 1000, with the proviso that a + b + c > 0 m and n independently of one another stand for integers between 1 and 1000, with the proviso that at least one of the conditions B = -OH or D = -H is met, the units a, b, c, m and n are distributed statistically or in blocks in the molecule.

[0088] Structural formula (Si-XI) is intended to clarify that the siloxane groups n and m do not necessarily have to be directly bonded to an end grouping B or D. Rather, in preferred formulas (Si-VI), a > 0 or b > 0, and in particularly preferred formulas (Si-VI), a > 0 and c > 0, i.e., the terminal grouping B or D is preferably bonded to a dimethylsiloxy grouping. In formula (Si-VI), the siloxane units a, b, c, m, and n are also preferably distributed randomly.

[0089] The silicones used according to the invention represented by formula (Si-VI) can be trimethylsilyl-terminated (D or B = -Si(CH3)3), but they can also be dimethylsilylhydroxy-terminated on two sides or dimethylsilylhydroxy- and dimethylsilylmethoxy-terminated on one side. Silicones particularly preferably used in the context of the present invention are selected from silicones in which

[0090] B = -O-Si(CH3)2OH and D = -Si(CH3)3

[0091] B = -O-Si(CH3)2OH and D = -Si(CH3)2OH

[0092] B = -O-Si(CH3)2OH and D = -Si(CH3)2OCH3

[0093] B = -O-Si(CH3)3and D = -Si(CH3)2OH

[0094] B = -O-Si(CH3)2OCH3 and D = -Si(CH3)2OH. These silicones lead to exorbitant improvements in the properties of hair treated with the agents according to the invention and to significantly improved protection during oxidative treatment.

[0095] It has proven particularly advantageous if the agent according to the invention contains the amino-functionalized silicone polymer(s) (a1) in specific amount ranges. Particularly good results were obtained when the agent contains—based on the total weight of the agent—a total amount of 0.1 to 10.0 wt.%, preferably 0.2 to 8.0 wt.%, more preferably 0.3 to 6.0 wt.%, and most preferably 0.4 to 5.0 wt.%.

[0096] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains - based on the total weight of the agent - one or more amino-functionalized silicone polymers (a1) in a total amount of 0.1 to 10.0% by weight, preferably 0.2 to 8.0% by weight, more preferably 0.3 to 6.0% by weight and most preferably 0.4 to 5.0% by weight.

[0097] White pigments (a2)

[0098] As a second ingredient essential to the invention, the composition according to the invention contains at least one white pigment. White pigments are achromatic inorganic pigments that preferably have a high refractive index.

[0099] White pigments are generally inorganic pigments whose optical effect is primarily based on wavelength-independent light scattering. Organic white pigments play a negligible role in practice. Ideal white pigments exhibit no absorption in the visible light range, but instead exhibit high scattering power, resulting in high opacity. The scattering power increases the greater the difference between the refractive index of the white pigment and that of the surrounding medium.

[0100] In a further embodiment, a particularly preferred agent for lightening keratin fibers, in particular human hair, containing

[0101] (a1) at least one amino-functionalized silicone polymer, and

[0102] (a2) at least one inorganic white pigment.

[0103] From the Colour Index, various white pigments are known to those skilled in the art, referred to as Pigment White, with this name followed by a consecutive number. The Colour Index (CI for short) has been a reference work for all common colorants and dye-based chemicals since 1925 and is considered a standard work in the field of pigment and dye chemistry. When used in cosmetic brightening agents, particularly good whitening results have been achieved with certain white pigments. Pigments selected from the group consisting of bismuth oxide chloride, boron nitride, synthetic fluorphlogopite, barium sulfate, calcium carbonate, calcium sulfate, zinc oxide, magnesium carbonate, titanium dioxide, zinc sulfide, lithopone, mica, and aluminum starch octenylsuccinate have proven particularly suitable.

[0104] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one white pigment (a2) which is selected from the group consisting of bismuth oxychloride, boron nitride, synthetic fluorphlogopite, barium sulfate, calcium carbonate, calcium sulfate, zinc oxide, magnesium carbonate, titanium dioxide, zinc sulfide, lithopone, mica and aluminum starch octenylsuccinate.

[0105] Bismuth oxychloride is a white, crystalline powder with the molecular formula BiOCl and the CAS number 7787-59-9. Alternative names include basic bismuth chloride, Pigment White 14, and CI 77163. Bismuth oxychloride occurs in anhydrous form and also as a hydrate, such as BiOCl x H2O.

[0106] Boron nitride has the molecular formula BN, CAS number 10043-11-5, and is a white solid. Boron nitride can be purchased commercially under the trade name Boron Nitrid HCJ 325, for example, from Sintec Keramik.

[0107] Synthetic fluorphlogopite is a synthetic mineral with the molecular formula (Mg3K[AlF2O(SiO3)3]) and CAS number 12003-38-2. The white powder can be purchased under the name Synthetic Mica Powder Fluorphlogopite, for example, from the company Jiangyin Youjia (Camida).

[0108] Barium sulfate, also known as barite or Pigment White 21, has the CAS number 7727-43-7 and the molecular formula BaSO4. Suppliers of barium sulfate include Changzhou Jiaye Chemical, QGN Quimica Geral do Nordeste, and Jiayehuagnog.

[0109] Calcium carbonate is also known as Pigment White 18 and has the molecular formula CaCO3. The CAS number for calcium carbonate is 471-34-1. Sources for calcium carbonate include Grolman and Chemische Fabrik Kalk.

[0110] Calcium sulfate is also known as Pigment White 25 and has the CAS number 7778-18-9 (anhydrous). Gypsum is a white solid. The molecular formula of the anhydrous form is CaSO4. The CAS number for the hemihydrate is 10034-76-1 and for the dihydrate is 10101-41-4. Both the anhydrous form and the hydrated forms of gypsum are within the scope of the invention.

[0111] Zinc oxide has the molecular formula ZnO and is also known as Pigment White 4. The CAS number of zinc oxide is 1314-13-2. Zinc oxide can be purchased commercially from companies such as PT Indo Lysaght (Brenntag), EverZinc (formerly Umicore), or Avokal-Heller (Oqema).

[0112] Magnesium carbonate has the molecular formula MgCO3 and the CAS number 546-93-0. The CAS numbers for the hydrates are 13717-00-5 (monohydrate), 5145-48-2 (dihydrate), 14457-83-1 (trihydrate), and 61042-72-6 (pentahydrate).

[0113] Titanium dioxide has the molecular formula TiO2 and is also known as Pigment White 6. The CAS number of titanium dioxide is 13463-67-7. Titanium dioxide can be purchased commercially from companies such as Univar, Anhui Gold Star Titanium Dioxide (Brenntag), or Merck.

[0114] Zinc sulfide is also known as Pigment White 7, has the molecular formula ZnS, and has the CAS number 1314-98-3. Zinc sulfide is a white powder and is marketed commercially by companies such as Ventor and Sachtleben Chemie.

[0115] Lithopone, also known as Pigment White 5, is a mixture of zinc sulfide and barium sulfate. Lithopone has the CAS number 1345-05-7 and can be purchased, for example, under the trade name Lithopone Red Seal from Sachtleben Chemie.

[0116] Mica, also known as mica, is a group of minerals belonging to the group of phyllosilicates. An alternative name for this mica is Pigment White 20. For example, a white powdered mica, which is muscovite and has the CAS number 12001-26-2, can be purchased from Kaolins d'Arvor under the trade name Mica MU M4. Muscovite mica, also known as white powder, can be purchased from Kings Mountain Mica under the name Mica 160.

[0117] Aluminum starch octenylsuccinate is a white powder with the CAS number 9087-61-0. Aluminum starch octenylsuccinate can be purchased under the trade names Dry Flo Pure or Dry Flo Plus from companies such as Nouryon, AkzoNobel, or National Starch.

[0118] The white pigment(s) according to the invention can be used either as individual substances or in their mixture.

[0119] A particularly strong lightening effect and, at the same time, a particularly natural blonde tone could be achieved with the white pigment(s) selected from the group consisting of bismuth oxide chloride, boron nitride, synthetic fluorphlogopite, barium sulfate, calcium carbonate, calcium sulfate, zinc oxide, and magnesium carbonate. These white pigments are therefore explicitly preferred.

[0120] Within the scope of a further explicitly particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one white pigment (a2) which is selected from the group consisting of bismuth oxychloride, boron nitride, synthetic fluorphlogopite, barium sulfate, calcium carbonate, calcium sulfate, zinc oxide and magnesium carbonate.

[0121] The white pigment(s) can be used as a powder in the composition according to the invention. Furthermore, the use of the white pigments as a slurry or dispersion in a solvent and / or an oil is also according to the invention.

[0122] For example, bismuth oxychloride can be incorporated into the inventive product in the form of its white powder. However, bismuth oxychloride can also be used in the form of a dispersion in ethylhexyl hydroxystearate. The optical white appearance of the pigment is retained in both powder and dispersion form.

[0123] The white pigment(s) (a2) are preferably used in specific quantity ranges in the agent according to the invention. Good results were obtained when the agent contained—based on its total weight—one or more white pigments (a2) in a total amount of 0.1 to 10 wt.%, preferably 0.4 to 10.0 wt.%, more preferably 0.8 to 10.0 wt.%, and most preferably 1.0 to 10.0 wt.%.

[0124] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains - based on its total weight - one or more white pigments (a2) in a total amount of 0.1 to 10 wt.%, preferably from 0.4 to 10.0 wt.%, more preferably from 0.8 to 10.0 wt.% and very particularly preferably from 1.0 to 10.0 wt.%.

[0125] Color pigments (a3)

[0126] For nuance development or to fine-tune the color output, the product according to the invention can also contain one or more color pigments (a3) ​​as a further optional ingredient. The color pigments (a3) ​​can be used, for example, if the lightening agent is intended to create a reddish blonde tone or a cool blonde tone with a bluish color impression.

[0127] Pigments in the sense of the present invention are understood to be coloring compounds which have a solubility in water at 25°C of less than 1.0 g / L, preferably less than 0.5 g / L, more preferably less than 0.1 g / L and particularly preferably less than 0.05 g / L. The water solubility can be determined, for example, using the method described below: 0.5 g of the pigment is weighed into a beaker. A stirring bar is added. Then one liter of distilled water is added. This mixture is heated to 25°C for one hour while stirring on a magnetic stirrer. If undissolved components of the pigment are still visible in the mixture after this period, the solubility of the pigment is below 0.5 g / L. If the pigment-water mixture cannot be assessed visually due to the high intensity of the pigment, which may be present in finely dispersed form, the mixture is filtered.If a portion of undissolved pigment remains on the filter paper, the solubility of the pigment is below 0.5 g / L.

[0128] Suitable color pigments can be of inorganic and / or organic origin.

[0129] In a preferred embodiment, an agent according to the invention is characterized in that it contains at least one color-providing compound (a2) from the group of inorganic and / or organic pigments.

[0130] Preferred color pigments are selected from synthetic or natural inorganic pigments. Inorganic color pigments of natural origin can be made from chalk, ochre, umber, green earth, burnt sienna, or graphite, for example. Other inorganic color pigments that can be used include black pigments such as iron oxide black, colored pigments such as ultramarine or iron oxide red, as well as fluorescent or phosphorescent pigments.

[0131] Particularly suitable are colored metal oxides, hydroxides, and oxide hydrates, mixed-phase pigments, sulfur-containing silicates, silicates, metal sulfides, complex metal cyanides, metal sulfates, chromates, and / or molybdates. Particularly preferred color pigments are black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and brown iron oxide (CI 77491), manganese violet (CI 77742), ultramarines (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), iron blue (ferric ferrocyanide, CI 77510), and / or carmine (cochineal).

[0132] Colored pearlescent pigments that are also particularly preferred according to the invention are colored pearlescent pigments. These are typically based on mica and / or mica and can be coated with one or more metal oxides. Mica belongs to the class of layered silicates. The most important representatives of these silicates are muscovite, phlogopite, paragonite, biotite, lepidolite, and margarite. To produce the pearlescent pigments in combination with metal oxides, the mica, predominantly muscovite or phlogopite, is coated with a metal oxide. As an alternative to natural mica, synthetic mica, optionally coated with one or more metal oxides, can also be used as a pearlescent pigment. Particularly preferred pearlescent pigments are based on natural or synthetic mica and are coated with one or more of the aforementioned metal oxides. The color of the respective pigments can be varied by varying the layer thickness of the metal oxide(s).

[0133] In a further preferred embodiment, an agent according to the invention is characterized in that it additionally contains a color pigment (a3) ​​which is selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and / or colored pigments based on mica or mica which are coated with at least one metal oxide and / or one metal oxychloride.

[0134] In a further preferred embodiment, an agent according to the invention is characterized in that it contains at least one color pigment (a3) ​​which is selected from mica- or mica-based pigments coated with one or more metal oxides from the group consisting of titanium dioxide (CI 77891), black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and / or brown iron oxide (CI 77491, CI 77499), manganese violet (CI 77742), ultramarines (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), chromium oxide (CI 77288) and / or iron blue (ferric ferrocyanide, CI 77510).

[0135] Examples of particularly suitable color pigments are commercially available under the trade names Rona®, Colorona®, Xirona®, Dichrona® and Timiron® from Merck, Ariabel® and Unipure® from Sensient, Prestige® from Eckart Cosmetic Colors and Sunshine® from Sunstar.

[0136] Please be sure to drink the color pigments with the Handelsbezeichnung Colorona® and beispielsweise:

[0137] Colorona Copper, Merck, MICA, CI 77491 (IRON OXIDES)

[0138] Colorona Passion Orange, Merck, Mica, CI 77491 (Iron Oxides), Alumina

[0139] Colorona Patina Silver, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona RY, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 75470 (CARMINE)

[0140] Colorona Oriental Beige, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Dark Blue, Merck, MICA, TITANIUM DIOXIDE, FERRIC FERROCYANIDE

[0141] Colorona Chameleon, Merck, CI 77491 (IRON OXIDES), MICA

[0142] Colorona Aborigine Amber, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE)

[0143] Colorona Blackstar Blue, Merck, CI 77499 (IRON OXIDES), MICA Colorona Patagonian Purple, Merck, MICA, Cl 77491 (IRON OXIDES), Cl 77891 (TITANIUM DIOXIDE), Cl 77510 (FERRIC FERROCYANIDE)

[0144] Colorona Red Brown, Merck, MICA, Cl 77491 (IRON OXIDES), Cl 77891 (TITANIUM DIOXIDE)

[0145] Colorona Russet, Merck, Cl 77491 (TITANIUM DIOXIDE), MICA, Cl 77891 (IRON OXIDES)

[0146] Colorona Imperial Red, Merck, MICA, TITANIUM DIOXIDE (Cl 77891), D&C RED NO. 30 (Cl 73360)

[0147] Colorona Majestic Green, Merck, Cl 77891 (TITANIUM DIOXIDE), MICA, Cl 77288 (CHROMIUM OXIDE GREENS)

[0148] Colorona Light Blue, Merck, MICA, TITANIUM DIOXIDE (Cl 77891), FERRIC FERROCYANIDE (Cl 77510)

[0149] Colorona Red Gold, Merck, MICA, Cl 77891 (TITANIUM DIOXIDE), Cl 77491 (IRON OXIDES)

[0150] Colorona Gold Plus MP 25, Merck, MICA, TITANIUM DIOXIDE (Cl 77891), IRON OXIDES (Cl 77491)

[0151] Colorona Carmine Red, Merck, MICA, TITANIUM DIOXIDE, CARMINE

[0152] Colorona Blackstar Green, Merck, MICA, Cl 77499 (IRON OXIDES)

[0153] Colorona Bordeaux, Merck, MICA, Cl 77491 (IRON OXIDES)

[0154] Colorona Bronze, Merck, MICA, Cl 77491 (IRON OXIDES)

[0155] Colorona Bronze Fine, Merck, MICA, Cl 77491 (IRON OXIDES)

[0156] Colorona Fine Gold MP 20, Merck, MICA, Cl 77891 (TITANIUM DIOXIDE), Cl 77491 (IRON OXIDES)

[0157] Colorona Sienna Fine, Merck, Cl 77491 (IRON OXIDES), MICA

[0158] Colorona Sienna, Merck, MICA, Cl 77491 (IRON OXIDES)

[0159] Colorona Precious Gold, Merck, Mica, Cl 77891 (Titanium dioxide), Silica, Cl 77491 (Iron oxides), Tin oxide

[0160] Colorona Sun Gold Sparkle MP 29, Merck, MICA, TITANIUM DIOXIDE, IRON OXIDES, MICA, Cl 77891 , Cl 77491 (EU)

[0161] Colorona Mica Black, Merck, Cl 77499 (Iron oxides), Mica, Cl 77891 (Titanium dioxide)

[0162] Colorona Bright Gold, Merck, Mica, Cl 77891 (Titanium dioxide), Cl 77491 (Iron oxides)

[0163] Colorona Blackstar Gold, Merck, MICA, Cl 77499 (IRON OXIDES)

[0164] Other particularly preferred color pigments with the trade name Xirona® include:

[0165] Xirona Golden Sky, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide

[0166] Xirona Caribbean Blue, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, Tin Oxide

[0167] Xirona Kiwi Rose, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide

[0168] Xirona Magic Mauve, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide.

[0169] In addition, particularly preferred color pigments with the trade name Unipure® are, for example:

[0170] Unipure Red LC 381 EM, Sensient CI 77491 (Iron Oxides), Silica Unipure Black LC 989 EM, Sensient, CI 77499 (Iron Oxides), Silica

[0171] Unipure Yellow LC 182 EM, Sensient, CI 77492 (Iron Oxides), Silica

[0172] In a further embodiment, the agent according to the invention may additionally contain one or more colored organic pigments (a3).

[0173] The organic pigments according to the invention are correspondingly insoluble, organic dyes or lakes which can be selected, for example, from the group of nitroso, nitro-azo, xanthene, anthraquinone, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyorrole, indigo, thioindido, dioxazine and / or triarylmethane compounds.

[0174] Particularly suitable organic pigments are, for example, carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, orange pigments with the color index numbers CI 1 1725, CI 15510, CI 45370, CI 71105, red pigments with the color index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470.

[0175] In a further particularly preferred embodiment, a composition according to the invention is characterized in that it additionally contains at least one color pigment (a3) ​​selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, orange pigments with the color index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the color index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470.

[0176] The organic pigment can also be a colored lake. For the purposes of the invention, the term colored lake refers to particles comprising a layer of absorbed dyes, the particle-dye unit being insoluble under the above-mentioned conditions. The particles can be, for example, inorganic substrates such as aluminum, silica, calcium borosilicate, calcium aluminum borosilicate, or even aluminum. Alizarin colored lake, for example, can be used as a colored lake.

[0177] Due to their excellent light and temperature resistance, the use of the aforementioned pigments in the agent according to the invention is very particularly preferred. Furthermore, it is preferred if the pigments used have a specific particle size. It is therefore advantageous according to the invention if the at least one pigment has an average particle size D50 of 1.0 to 50 pm, preferably of 5.0 to 45 pm, more preferably of 10 to 40 pm, in particular of 14 to 30 pm. The average particle size D50 can be determined, for example, using dynamic light scattering (DLS).

[0178] The colored pigments (a3) ​​are also preferably used in the composition in specific amounts. Good results were obtained when the composition contained—based on the total weight of the composition—one or more colored pigments (a3) ​​in a total amount of 0.01 to 10.0 wt.%, preferably 0.1 to 5.0 wt.%, more preferably 0.2 to 2.5 wt.%, and most preferably 0.25 to 1.5 wt.%.

[0179] In a further very particularly preferred embodiment, an agent according to the invention is characterized in that the agent - based on the total weight of the agent - contains one or more colored pigments (a3) ​​in a total amount of 0.01 to 10.0 wt.%, preferably 0.1 to 5.0 wt.%, more preferably from 0.2 to 2.5 wt.% and very particularly preferably from 0.25 to 1.5 wt.%.

[0180] Weight ratio (a2) / (a3)

[0181] In the product according to the invention, the actual lightening effect is achieved by the white pigment(s) (a2), and the colored pigments (a3) ​​serve merely to shade or fine-tune the desired blonde shade. To avoid unduly reducing the lightening effect due to excessive amounts of color pigments, the white pigment(s) (a2) are used in at least the same amount as the colored pigments (a3). Preferably, the white pigments (a2) are used in a weight excess compared to the color pigments (a3).

[0182] A lightening of the keratin fibers and at the same time the development of an extensive color palette of different blonde tones was possible if the weight ratio of the total amount of white pigments (a2) contained in the agent to the total amount of color pigments (a3) ​​contained in the agent, ie the weight ratio (a2) / (a3), was at a value of 10:1 to 1:1, preferably from 10:1 to 1.1:1, more preferably from 10:1 to 1.5:1 and particularly preferably from 10:1 to 2:1.

[0183] Within the scope of a further particularly preferred embodiment, an agent according to the invention is characterized in that it comprises (a2) at least one white pigment and

[0184] (a3) contains at least one colour pigment, wherein the weight ratio of the total amount of white pigments (a2) contained in the agent to the total amount of colour pigments (a3) ​​contained in the agent, ie the weight ratio (a2) / (a3), is from 10:1 to 1:1, preferably from 10:1 to 1.1:1, more preferably from 10:1 to 1.5:1 and particularly preferably from 10:1 to 2:1.

[0185] At a weight ratio of 10:1, the white pigments (a2) are used in a tenfold excess by weight compared to the colored pigments (a3).

[0186] At a weight ratio of 1.1:1, the white pigments (a2) are used in a 1.1-fold weight excess compared to the colored pigments (a3).

[0187] Very particularly preferably, white pigments (a2) and colored pigments (a3) ​​are used in such amounts on average that the white pigments are present in a 2-fold to 10-fold excess by weight compared to the colored pigments.

[0188] The use of the following combinations of white pigment (a2) and color pigment (a3) ​​has proven to be particularly preferred:

[0189] Bismuth Oxychloride / CI 71105, Boron Nitride / CI 71105, Synthetic Fluorphlogopite / CI 71105, Barium Sulfate / CI 71105, Calcium Carbonate / CI 71105, Calcium Sulfate / CI 71105, Zinc Oxide / CI 71105, Magnesium Carbonate / CI 71105,

[0190] Bismuth Oxychloride / CI 15850, Boron Nitride / CI 15850, Synthetic Fluorphlogopite / CI 15850, Barium Sulfate / CI 15850, Calcium Carbonate / CI 15850, Calcium Sulfate / CI 15850, Zinc Oxide / CI 15850, Magnesium Carbonate / CI 15850,

[0191] Bismuth Oxychloride / CI 69800, Boron Nitride / CI 69800, Synthetic Fluorphlogopite / CI 69800, Barium Sulfate / CI 69800, Calcium Carbonate / CI 69800, Calcium Sulfate / CI 69800, Zinc Oxide / CI 69800, Magnesium Carbonate / CI 69800,

[0192] Bismuth Oxychloride / CI 19140, Boron Nitride / CI 19140, Synthetic Fluorphlogopite / CI 19140, Barium Sulfate / CI 19140, Calcium Carbonate / CI 19140, Calcium Sulfate / CI 19140, Zinc Oxide / CI 19140, Magnesium Carbonate / CI 19140,

[0193] Bismuth Oxychloride / CI 19140, Boron Nitride / CI 19140, Synthetic Fluorphlogopite / CI 19140, Barium Sulfate / CI 19140, Calcium Carbonate / CI 19140, Calcium Sulfate / CI 19140, Zinc Oxide / CI 19140 and Magnesium Carbonate / CI 19140.

[0194] Within the scope of a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one combination of a white pigment (a2) and a color pigment (a3), which is selected from the group consisting of bismuth oxychloride / CI 71105, boron nitride / CI 71105, synthetic fluorphlogopite / CI 71105, barium sulfate / CI 71105, calcium carbonate / CI 71105, calcium sulfate / CI 71105, zinc oxide / CI 71105, magnesium carbonate / CI 71105, bismuth oxychloride / CI 15850, boron nitride / CI 15850, synthetic fluorphlogopite / CI 15850, barium sulfate / CI 15850, calcium carbonate / CI 15850, calcium sulfate / CI 15850, zinc oxide / CI 15850, magnesium carbonate / CI 15850, bismuth oxychloride / CI 69800, boron nitride / CI 69800, synthetic fluorophlogopite / CI 69800, barium sulfate / CI 69800, calcium carbonate / CI 69800, calcium sulfate / CI 69800, zinc oxide / CI 69800, magnesium carbonate / CI 69800, bismuth oxychloride / CI 19140, Boron nitride / CI 19140,synthetic fluorphlogopite / CI 19140, barium sulfate / CI 19140, calcium carbonate / CI 19140, calcium sulfate / CI 19140, zinc oxide / CI 19140, magnesium carbonate / CI 19140, bismuth oxychloride / CI 19140, boron nitride / CI 19140, synthetic fluorphlogopite / CI 19140, barium sulfate / CI 19140, calcium carbonate / CI 19140, calcium sulfate / CI 19140, zinc oxide / CI 19140 and magnesium carbonate / CI 19140.

[0195] In a product containing the combination bismuth oxychloride / CI 71105, both bismuth oxychloride and the pigment with the CI number 71105 are used in the brightening agent according to the invention.

[0196] Average water content

[0197] The agent described above is a ready-to-use agent that can be applied to the keratin material. This ready-to-use agent preferably has a low to medium water content.

[0198] It has proven particularly advantageous to limit the water content of the agent to a maximum of 50.0 wt.%, preferably 0.5 to 35.0 wt.%, more preferably 1.0 to 20.0 wt.%, and particularly preferably 1.5 to 15.0 wt.%. Therefore, agents which contain, based on the total weight of the agent, 0.1 to 50.0 wt.%, preferably 0.5 to 35.0 wt.%, more preferably 1.0 to 20.0 wt.%, and particularly preferably 1.5 to 15.0 wt.% of water are particularly suitable.

[0199] In a further explicitly very particularly preferred embodiment, an agent according to the invention is characterized in that it contains - based on the total weight of the agent - 0.1 to 50.0 wt.%, preferably 0.5 to 35.0 wt.%, more preferably 1.0 to 20.0 wt.% and particularly preferably 1.5 to 15.0 wt.% water.

[0200] For example, a maximum water content of 15% by weight in the product means that the amount of water in the product resulting from the direct use of water in the product and / or the amount of water introduced into the product by the amounts of water present in the ingredients used does not exceed 15% by weight. The water content in percent by weight is based on the total weight of the product.

[0201] Solvents in the agent: The use of solvents in the agent has led to good results. For this reason, the agent according to the invention can additionally contain at least one solvent as an optional ingredient.

[0202] Suitable solvents include, for example, solvents from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerin, phenoxyethanol, and benzyl alcohol. The use of 1,2-propylene glycol is particularly preferred.

[0203] In a further very particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one solvent from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol and benzyl alcohol, very particularly preferably 1,2-propylene glycol.

[0204] 1,2-Propylene glycol is alternatively referred to as 1,2-propanediol and has the CAS numbers 57-55-6 [(RS)-1,2-dihydroxypropane], 4254-14-2 [(R)-1,2-dihydroxypropane] and 4254-153 [(S)-1,2-dihydroxypropane]. Ethylene glycol is alternatively referred to as 1,2-ethanediol and has the CAS number 107-21-1. Glycerin is alternatively referred to as 1,2,3-propanetriol and has the CAS number 56-81-5. Phenoxyethanol has the CAS number 122-99-6.

[0205] All solvents described above are commercially available from various chemical suppliers such as Aldrich or Fluka.

[0206] By using the aforementioned solvents in suitable quantities, a particularly stable agent can be obtained with which color results of particularly high intensity can be achieved on the keratin material.

[0207] The solvent(s) are preferably present in the agent according to the invention in specific amounts. It has proven preferable for the agent to contain one or more solvents other than water in a total amount of 5.0 to 60.0 wt.%, preferably 10.0 to 50.0 wt.%, and most preferably 20 to 50 wt.%, based on the total weight of the agent.

[0208] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains - based on the total weight of the agent - one or more solvents from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol and benzyl alcohol in a total amount of 5.0 to 60.0 wt.%, preferably 10.0 to 50.0 wt.% and very particularly preferably 20 to 50 wt.%.

[0209] Alkylene glycols on average

[0210] In addition to the solvents described above, or instead of them, the composition according to the invention may also contain one or more alkylene glycols. For example, very good results were obtained when the composition contained at least one alkylene glycol of formula (AG-1),

[0211] (AG-1), where x1 is an integer from 1 to 100.

[0212] The alkylene glycols of formula (AG-1) are protic substances with at least two hydroxyl groups, which, due to their repeating unit -CH2-CH2-O-, can also be referred to as polyethylene glycols, provided x1 represents a value of at least 2. In the alkylene glycols of formula (AG-1), x1 represents an integer from 1 to 100. The work leading to this invention has shown that these polyethylene glycols—together with the other components of the composition—are particularly suitable for ensuring sufficiently intense coloration and improving the feel of keratin fibers.

[0213] Depending on their chain length, polyethylene glycols are liquid or solid, water-soluble polymers. Polyethylene glycols with a molecular weight between 200 g / mol and 400 g / mol are non-volatile liquids at room temperature. PEG 600 has a melting range of 17 to 22 °C and thus a paste-like consistency. With molecular weights above 3000 g / mol, PEGs are solid substances and are marketed as flakes or powders.

[0214] The use of low-molecular-weight alkylene glycols (or polyethylene glycols) has proven highly suitable for achieving the object of the invention. For low-molecular-weight alkylene glycols (or polyethylene glycols) within the meaning of the present invention, x1 represents an integer from 1 to 100, preferably an integer from 1 to 80, more preferably an integer from 2 to 60, even more preferably an integer from 3 to 40, even more preferably an integer from 4 to 20, and most preferably an integer from 6 to 15. Within the scope of a further very particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one alkylene glycol of the formula (AG-1),

[0215] (AG-1), where x1 is an integer from 1 to 100, preferably an integer from 2 to 60, more preferably an integer from 3 to 40, even more preferably an integer from 4 to 20, and most preferably an integer from 6 to 15.

[0216] A particularly preferred low-molecular-weight polyethylene glycol is PEG-8. PEG-8 contains an average of 8 ethylene glycol units (x1 = 8), has an average molecular weight of 400 g / mol, and bears the CAS number 25322-68-3. PEG-8 is also known as PEG 400 and is commercially available, for example, from APS.

[0217] Other suitable low molecular weight polyethylene glycols include PEG-6, PEG-7, PEG-9 and PEG-10.

[0218] Another suitable polyethylene glycol is PEG-32. PEG-32 contains 32 ethylene glycol units (x1 = 32), has an average molecular weight of 1500 g / mol, and carries the CAS number 25322-68-3. PEG-32 is also known as PEG 1500 and can be purchased commercially, for example, from Clariant.

[0219] Furthermore, very good results were obtained when the agent contained at least one alkylene glycol of the formula (AG-2),

[0220] (AG-2), where x2 is an integer from 1001 to 95000.

[0221] The alkylene glycols of formula (AG-2) are polyethylene glycols with a very high molecular weight, where the index number x2 represents an integer from 1001 to 95000. In combination, the alkylene glycols (AG-1) and (AG-2) enable good applicability of the cosmetic product, good color absorption of white pigment (a2) and aminosilicone (a1), and, in particular, an improvement in the feel of the keratin fibers.

[0222] In particularly preferred alkylene glycols of the formula (AG-2), x2 represents an integer from 1001 to 80000, preferably from 1400 to 40000, more preferably from 1800 to 20000 and most preferably from 2000 to 10000.

[0223] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one alkylene glycol of the formula (AG-2),

[0224] (AG-2), where x2 is an integer from 1001 to 80000, preferably from 1400 to 40000, more preferably from 1800 to 20000 and most preferably from 2000 to 10000.

[0225] Particularly suitable high molecular weight polyethylene glycols are the commercially available products from Dow under the trade name Polyox.

[0226] A particularly suitable example is POLYOX WSR 301. In this polyethylene glycol with the formula (AG-2), x2 represents an average of 90,000. POLYOX WSR 301 has a weight-average molecular weight of 4,000,000 Daltons.

[0227] POLYOX WSR N-60K, also known as PEG-45M, is also well-suited. In this polyethylene glycol of formula (AG-2), X2 has an average value of 45,000. PEG-45M has a weight-average molecular weight of 2,000,000 Daltons.

[0228] POLYOX WSR N-12K, also known as PEG-23M, is also well-suited. In this polyethylene glycol with the formula (AG-2), x2 represents an average of 23,000. PEG-23M has a weight-average molecular weight of 1,000,000 Daltons.

[0229] POLYOX WSR-1105 is also well suited. For this polyethylene glycol of formula (AG-2), x2 represents an average integer of 20,454 and a weight-average molecular weight of 900,000 Daltons. POLYOX WSR 35 is also well suited. For this polyethylene glycol of formula (AG-2), x2 represents an average integer of 4,500. POLYOX WSR 35 has a weight-average molecular weight of 200,000 Daltons.

[0230] POLYOX WSR N-10 is particularly suitable; in this polyethylene glycol of formula (AG-2), x2 represents an average integer of 2272. POLYOX WSR N-10 has a weight-average molecular weight of 100,000 Daltons.

[0231] Furthermore, very good results were obtained when the agent contained at least one alkylene glycol of the formula (AG-3), wherein the alkylene glycol of the formula (AG-3) is a polyethylene glycol with an average molecular weight.

[0232] The optionally contained alkylene glycol of formula (AG-3) (AG-3), x3 represents an integer from 101 to 1000, preferably an integer from 105 to 800, more preferably an integer from 107 to 600, even more preferably an integer from 109 to 400, and most preferably an integer from 110 to 200.

[0233] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains at least one alkylene glycol of the formula (AG-3),

[0234] (AG-3), where x3 is an integer from 101 to 1000, preferably an integer from 105 to 800, more preferably an integer from 107 to 600, even more preferably an integer from 109 to 400, and most preferably an integer from 110 to 200.

[0235] A particularly suitable medium-molecular-weight polyethylene glycol is PEG 6000, which is commercially available from National Starch (China). The molecular weight of PEG 6000 is between 6000 and 7500 g / mol, corresponding to a x3 value of 136 to 171.

[0236] Another suitable polyethylene glycol is PEG 12000, which is marketed commercially by CG Chemicals, for example, under the trade name Polyethylene Glycol 12000 S (or PEG 12000 S). The molecular weight of PEG 12000 is stated to be between 10,500 and 15,000 g / mol, corresponding to a x3 value of 238 to 341.

[0237] Another suitable polyethylene glycol is PEG 20000, which is commercially available from Clariant under the trade name Polyglycol 20000 P or under the alternative name PEG-350. PEG 20000 has an average molecular weight of 20000 g / mol, which corresponds to a x3 value of 454.

[0238] The alkylene glycols of the formula (AG-1), (AG-2) and / or (AG-3) are also preferably present in the agent according to the invention in certain quantitative ranges. It has proven particularly advantageous if the agent - based on its total weight - contains one or more alkylene glycols, preferably one or more alkylene glycols of the formulas (AG-1), (AG-2) and / or (AG-3), in a total amount of 1.0 to 90.0 wt.%, preferably 10.0 to 80.0 wt.%, more preferably 15.0 to 70.0 wt.%, and most preferably 30.0 to 65.0 wt.%.

[0239] In a further particularly preferred embodiment, an agent according to the invention is characterized in that it contains - based on the total weight of the agent - one or more alkylene glycols, preferably one or more alkylene glycols of the formulas (AG-1), (AG-2) and / or (AG-3), in a total amount of 1.0 to 90.0 wt.%, preferably from 10.0 to 80.0 wt.%, more preferably from 15.0 to 70.0 wt.%, and very particularly preferably from 30.0 to 65.0 wt.%. Other ingredients in the agent

[0240] The agent according to the invention can also contain other active ingredients, auxiliaries and additives, such as, for example, structuring agents such as fatty components, glucose, maleic acid and lactic acid, hair conditioning compounds such as phospholipids, for example lecithin and cephalins; perfume oils, dimethyl isosorbide and cyclodextrins; polymers such as anionic, non-ionic and cationic polymers; surfactants such as anionic, non-ionic, cationic, zwitterionic and amphoteric surfactants, fatty components, fiber structure-improving active ingredients, in particular mono-, di- and oligosaccharides such as, for example, glucose, galactose, fructose, fructose and lactose; dyes for lightening the agent; anti-dandruff active ingredients such as piroctone olamine, zinc omadine and climbazole; amino acids and oligopeptides; Protein hydrolysates of animal and / or vegetable origin, as well as in the form of their fatty acid condensation products or, where appropriate, anionically or cationically modified derivatives;vegetable oils; sunscreens and UV blockers; active ingredients such as panthenol, pantothenic acid, pantolactone, allantoin, pyrrolidinone carboxylic acids and their salts and bisabolol; polyphenols, in particular hydroxycinnamic acids, 6,7-dihydroxycoumarins, hydroxybenzoic acids, catechins, tannins, leucoanthocyanidins, anthocyanidins, flavanones, flavones and flavonols; ceramides or pseudoceramides; vitamins, provitamins and vitamin precursors; plant extracts; fats and waxes such as fatty alcohols, beeswax, montan wax and paraffins; swelling and penetrating agents such as glycerin, propylene glycol monoethyl ether, carbonates, hydrogen carbonates, guanidines, ureas and primary, secondary and tertiary phosphates; opacifiers such as latex, styrene / PVP and styrene / acrylamide copolymers; Pearlescent agents such as ethylene glycol mono- and distearate and PEG-3 distearate; as well as propellants such as propane-butane mixtures, N2O, dimethyl ether, CO2 and air.

[0241] The expert will select these additional substances based on the desired properties of the agent. Regarding further optional components and the amounts of these components used, reference is expressly made to the relevant manuals known to the expert. The additional active ingredients and excipients are preferably used in the preparations according to the invention in amounts of 0.0001 to 25 wt.%, in particular 0.0005 to 15 wt.%, based on the total weight of the respective agent.

[0242] Process for lightening keratin fibers

[0243] The agents described above can be used excellently in processes for lightening keratin fibers, especially human hair.

[0244] A second object of the present invention is therefore a method for lightening keratin fibers, in particular human hair, comprising the following steps:

[0245] (1) Application of an agent as disclosed in detail in the description of the first subject of the invention to the keratin fibres,

[0246] (2) Action of the agent on the keratin fibers, and

[0247] (3) if necessary, rinse the product with water.

[0248] In step (1) of the method according to the invention, the lightening agent of the first subject matter of the invention is applied to the keratin fibers, which are most preferably human hair.

[0249] In step (2) of the method according to the invention, the agent is then allowed to act on the keratin fibers after its application. In this context, various exposure times, for example, from 30 seconds to 60 minutes, are conceivable. A major advantage of the color-changing system according to the invention, however, is that an intensive color result can be achieved even in very short periods of time after short exposure times. For this reason, it is advantageous if the application mixture remains on the keratin fibers for only a comparatively short period of time, from 30 seconds to 15 minutes, preferably from 30 seconds to 10 minutes, and particularly preferably from 1 to 5 minutes.

[0250] In a further preferred embodiment, a method according to the invention is characterized by

[0251] (2) Applying the agent to the keratin fibers for a period of time from 30 seconds to 15 minutes, preferably from 30 seconds to 10 minutes, and particularly preferably from 1 to 5 minutes.

[0252] After the bleaching agent has acted on the keratin fibers, they are finally rinsed with water in step (3) of the process.

[0253] In one embodiment, the lightening agent can be washed out with water alone, i.e., without the aid of a post-treatment agent or shampoo. The use of a post-treatment agent or conditioner in step (3) and / or after step (3) is also conceivable in principle.

[0254] With regard to the further preferred embodiments of the method according to the invention, what has been said about the agent according to the invention applies mutatis mutantis.

[0255] Examples

[0256] 1 . Formulations

[0257] The following formulation was prepared (all data in wt.% unless otherwise stated)

[0258] 2. Coloring

[0259] Hair strands (Kerling 4-0, dark blonde) were colorimetrically measured. The ready-to-use lightening agent was then applied to the hair strands (liquor ratio: 1 g of agent per 1 g of hair strand) and left on for three minutes. The hair strands were then thoroughly rinsed with water (1 minute) and dried with a towel. The strands were then colorimetrically measured again.

[0260] The dE value used to assess the color difference is calculated from the L*a*b* color values ​​measured on the respective strand as follows: dE = [ (Li - Lo) 2 + (ai - ao) 2 + (bi - bo)] 1 / 2

[0261] Lo, ao and bo = measurements of the untreated strand

[0262] Li, ai and bi = measurements of the lightened strand

[0263] The higher the dE value, the greater the color difference between the untreated hair and the lightened hair and the more pronounced the color change.

[0264] The dL value used to assess the brightness is calculated from the L value measured on the respective strand as follows: dL = Li - Lo

[0265] Lo = measured value of the untreated strand

[0266] Li = measured value of the lightened strand The higher the dL value, the greater the difference in brightness compared to untreated hair and the stronger the lightening effect.

[0267] The following color results were obtained:

Claims

Patent claims 1. Agents for lightening keratinous fibers, especially human hair, containing (a1) at least one amino-functionalized silicone polymer, and (a2) at least one white pigment.

2. Composition according to claim 1, characterized in that it contains at least one amino-functionalized silicone polymer (a1) comprising at least one structural unit of the formula (Si-Amino), -Amino) where ALK1 and ALK2 independently for a linear or branched, divalent Ci- C2o alkylene group.

3. Composition according to one of claims 1 to 2, characterized in that it contains at least one amino-functionalized silicone polymer (a1) comprising structural units of formula (Si-I) and formula (Si-I I) A composition according to any one of claims 1 to 3, characterized in that it contains – based on the total weight of the composition – one or more amino-functionalized silicone polymers (a1) in a total amount of 0.1 to 10.0 wt.%, preferably 0.2 to 8.0 wt.%, more preferably 0.3 to 6.0 wt.%, and most preferably 0.4 to 5.0 wt.%. A composition according to any one of claims 1 to 4, characterized in that it contains at least one white pigment (a2) selected from the group consisting of bismuth oxychloride, boron nitride, synthetic fluorphlogopite, barium sulfate, calcium carbonate, calcium sulfate, zinc oxide, magnesium carbonate, titanium dioxide, zinc sulfide, lithopone, mica, and aluminum starch octenyl succinate. A composition according to any one of claims 1 to 5, characterized in that it comprises - based on its total weight - one or more white pigments (a2) in a total amount of 0.1 to 10 wt.%, preferably 0.4 to 10.0 wt.%, more preferably 0.8 to 10.0 wt.%.-% and most preferably from 1.0 to 10.0 wt.%. Composition according to any one of claims 1 to 6, characterized in that it additionally contains a color pigment (a3) ​​selected from the group consisting of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and / or colored pigments based on mica or micaceous oxide, which are coated with at least one metal oxide and / or one metal oxychloride. A composition according to any one of claims 1 to 7, characterized in that it additionally contains a color pigment (a3) ​​selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, and orange pigments with the color index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the Color Index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470. A composition according to any one of claims 1 to 8, characterized in that it (a2) comprises at least one white pigment and (a3) contains at least one colour pigment, wherein the weight ratio of the total amount of white pigments (a2) contained in the average to the total amount of colour pigments (a3) ​​contained in the average, i.e. the weight ratio (a2) / (a3), is between 10:1 and 1:1, preferably between 10:1 and 1.1:1, more preferably between 10:1 and 1.5:1 and particularly preferably between 10:1 and 2:

1. A composition according to any one of claims 1 to 9, characterized in that it contains at least one combination of a white pigment (a2) and a color pigment (a3) ​​selected from the group consisting of bismuth oxychloride / CI 71105, boron nitride / CI 71105, synthetic fluorphlogopite / CI 71105, barium sulfate / CI 71105, calcium carbonate / CI 71105, calcium sulfate / CI 71105, zinc oxide / CI 71105, magnesium carbonate / CI 71105, bismuth oxychloride / CI 15850, boron nitride / CI 15850, synthetic fluorphlogopite / CI 15850, barium sulfate / CI 15850, calcium carbonate / CI 15850, calcium sulfate / CI 15850,Zinc oxide / CI 15850, Magnesium carbonate / CI 15850, Bismuth oxide chloride / CI 69800, Boron nitride / CI 69800, Synthetic fluorphlogopite / CI 69800, Barium sulfate / CI 69800, Calcium carbonate / CI 69800, Calcium sulfate / CI 69800, Zinc oxide / CI 69800, Magnesium carbonate / CI 69800, Bismuth oxide chloride / CI 19140, Boron nitride / CI 19140, Synthetic fluorphlogopite / CI 19140, Barium sulfate / CI 19140, Calcium carbonate / CI 19140, Calcium sulfate / CI 19140, Zinc oxide / CI 19140, Magnesium carbonate / CI 19140, Bismuth oxide chloride / CI 19140, Boron nitride / CI 19140, Synthetic fluorphlogopite / CI 19140, Barium sulfate / CI 19140, Calcium carbonate / CI 19140, Calcium sulfate / CI 19140, Zinc oxide / CI 19140 and Magnesium carbonate / CI 19140. A composition according to any one of claims 1 to 10, characterized in that it contains – based on the total weight of the composition – one or more solvents from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol, and benzyl alcohol in a total amount of 5.0 to 60.0 wt.%, preferably 10.0 to 50.0 wt.%, and most preferably 20 to 50 wt.%. A composition according to any one of claims 1 to 11, characterized in that it contains at least one alkylgene glycol of formula (AG-1), (AG-1), where x1 represents an integer from 1 to 100, preferably an integer from 2 to 60, more preferably an integer from 3 to 40, even more preferably an integer from 4 to 20, and most preferably an integer from 6 to 15. A composition according to any one of claims 1 to 12, characterized in that it contains at least one alkylene glycol of formula (AG-3), (AG-3), where x3 represents an integer from 101 to 1000, preferably an integer from 105 to 800, more preferably an integer from 107 to 600, still more preferably an integer from 109 to 400, and most preferably an integer from 110 to 200. A method for lightening keratinous fibers, in particular human hair, comprising the following steps: (1) Application of an agent according to any one of claims 1 to 13 to the keratinous fibers, (2) Action of the agent on the keratinous fibers and (3) If necessary, rinse the product with water.

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